read this poem please :D?

The Beep Beep Poem:

i should write a poem

but there's almost nothing

that hasn't been said

and said and said

beautifully, ugly, blandly

excitingly

stay in school

make love not war

death to all tyrants

where have all the flowers gone

and don't they understand at kent state

the troopers will shoot . . . again

i could write a poem

because i love walking

in the rain

and the solace of my naked

body in a tub of water

cleanliness may not be next

to godliness but it sure feels

good

i wrote a poem

for my father but it was so constant

i burned it up

he hates change

and i'm baffled by sameness

-Nikki Giovanni

What do you think this is about or referring to? Any ideas! Please be specific and lengthy.